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Topic-0 - USEFUL INFORMATION IMPORTANT PHYSICAL CONSTANTS...

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USEFUL INFORMATION IMPORTANT PHYSICAL CONSTANTS 299,792,458 m/s - ´ 3 00 10 m/s (speed of light) ¸ Þ ) 6.673 10 N m /kg (gravitational constant) K œ "" # # 8.988 10 N m C 5 œ œ Î / # # 1 4 9 1% 0 9 10 N m C (electrical constant) ¸ Î 9 # # 6.626 10 J s (Planck's constant) 2 œ 34 Also: 1.0546 10 J s h ´ 2Î# œ 1 34 8.854 10 C N m (permittivity of free space) % ! 5 "# # # œ œ Î 1 4 1 / 1.602 10 C (fundamental electric charge) / œ " 9 Note: The charge of the electron is and the charge of the proton is  /  / IMPORTANT PHYSICAL QUANTITIES Electron: 9.11 10 kg 1.60 10 C 7 œ ; œ  / œ  e 3 9  " " / Proton: 1.673 10 kg 1.60 10 C 7 œ ; œ  / œ  p 7 9 # " : Neutron: 1.675 10 kg 0 7 œ ; œ n 7 # 1 œ ¸ 9.8 N/kg 10 N/kg (gravitational field strength near surface of earth) ASTRONOMICAL INFORMATION Mass Mean Radius Mean distance from Earth Moon Earth 6 7.36 10 kg 1.74 10 m 3.84 10 m 5.98 10 kg .37 1 22 6 8 24 0 m 1.99 10 kg 6.96 10 m 1.5 10 m 6 30 8 11 Sun
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SI ("SYSTÈME INTERNATIONALE) UNITS The fundamental units of the "metric system" are: the kilogram (kg) for mass, ç the second (s) for time, ç the meter (m) for length, and ç the ampere (A) for electric current. ç In addition to the basic units of SI, multiples and submultiples can be formed used metric prefixes such as M (for mega) for 1,000,000 or (for micron) for 0.000001. The prefixes and . their symbols are listed below. The most common ones, the ones you should know, are given in boldface.
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